is a common saying in many families. However, not all dishes are suitable for the next meal, which needs attention.

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are green leafy vegetables. The nitrate absorbed by green leafy vegetables from fertilizer and soil will be gradually reduced by bacteria to nitrite which may cause cancer to human body, and nitrite content is the highest in long-standing leftovers. In addition, the vitamins in green leafy vegetables almost disappear after repeated heating.

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cold dishes. Cold dishes do not have bactericidal effect, and bacteria will be brought into the cold dishes that have been eaten. Long time storage provides enough time for the growth and reproduction of bacteria, resulting in the transformation of nitrate in vegetables into nitrite. At the same time, bacteria may also multiply in cold dishes, and improper storage may cause food safety problems such as diarrhea. In addition, after a period of time, the taste and color of cold dishes also decreased.

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soybean products. Bean curd and other bean products contain a lot of water and are rich in protein and other nutrients, which is a good microbial culture medium. Therefore, it is better not to leave the bean products for the next meal.

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seafood. Seafood is also one of the least worthwhile leftovers, because eating seafood emphasizes its delicious taste. If it is kept for too long, it will lose its flavor. Therefore, it is better to prepare the amount that can be eaten at one time and finish it at one meal. ▲

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